Jessica Dorrell, an Arkansas football employee who has been placed on administrative leave, used $20,000 cash gift from the former coach to buy a car during her first week in the job.     

The detail was revealed when athletic director Jeff Long wrote a letter notifying that Bobby Petrino was fired April 10. The letter was obtained and released by Associated Press Friday as part of a Freedom of Information Act request.

In the letter, Long has outlined the four reasons why Petrino was fired.  He also mentioned a fifth reason referring to a large sum of cash gift given to Dorrell.  She used the money to purchase a black Aura.

Among other concerns relating to this 'gift' you should have disclosed this fact to me when you recommended hiring Ms. Dorrell in the football program, but you failed to do so, Long wrote.

Petrino hired his 25-year-old former mistress as a student-athlete development coordinator at an annual salary of $55, 735.

On Thursday, Petrino's attorney Russ Campbell and Patrick Strong from Birmingham, Ala., informed Long that he would not appeal his firing and seek the $18-million buyout that was part of his Arkansas contract.

Petrino had accepted responsibility for the events that led to the university's decision to terminate his contract, Campbell told Long in an email. Coach Petrino and his family wish nothing but the best for both the Razorback football program and University of Arkansas.

Long said that Petrino failed to inform him that he had engaged in an extra-marital affair with Dorrell before hiring her last month.

Your conduct and actions in this matter have generated voluminous negative media stories and opinions, within Arkansas and nationally, that have harmed the reputation of the University of Arkansas and our athletics programs, Long wrote to Petrino.

Meanwhile, Dorrell has been placed on paid leave and University spokesman Steve Voorhies confirmed her leave Friday morning, saying that the university would not issue any further details because the situation is a personnel matter.

Long ripped Petrino for poor judgment and said that by lying to boss and the public he had left the university with the only option task of restoring the reputation of our institution and our athletics programs, Associated Press reported.

Obviously, I was very excited when we completed your most recent Employment Agreement, and I looked forward to a bright future, Long wrote in his termination letter. I recognize that you are a very talented football coach, but the University may not disregard your conduct or sacrifice its integrity, reputation and principles. As a personal matter, I certainly wish you and your family the best in the future.